Synchronized motion-picture apparatus



W. H. BRISI UL.

PARATUS Patented Oct 10, 1922.

2 SHEEYS-SHEEY T I ll awuwtoz W. H. BRISTOL. SYNCHRONKZED monou PICTUREAPPARATUS.

AYPUCAYlON HLED DEC- 3. \920.

Patented Oct. 10, 1922.

2 SHEiT -SHEET 2.

IIIIIIIIIIII lm/m/Mmmwz M 40 6110mm;

Patented Get. 10, 1922.

UNITED STATES WILLIAM H. BRISTOL, 0F WATERBURY, CONNECTICUT.

SYNCHRONIZED MOTION-PICTURE APPARATUS.

Application filed December 31, 1920.

To (LU. ID/l Jlli if may i omcrn.

Be it known that l, Wraunu H. BRISTOL, a citizen of the United States.and a resident of Waterbury, in the county of New Haven and State ofConnecticut, have inrented certain new and useful Improve; ments inSynchronized Motion-Picture Apparntus, of which the following is aspecifiration.

The invention relates to synchronized motion picture apparatus such asmay be employed in combination with a phonograph or other entertainmentapparatus, forexample as set forth in my prior U. S. Patent No.1,234,127, dated July 24th, 1917.

The invention has for its object, more particularly, to provide aprojection unit which may be driven in the usual manner fornonsynchronized operation and readily con verted for synchronizing theprojector with other apparatus and also arranged for convenientlyresynchronizing the same in the event of a disturbance ofsynchronization between the cooperating entainment apparatus. Moreespecially, the invention relates to means for engaging or disengagingin a simple and convenient manner synchronized driving mechanism fromthe projecting machine; saidsynchronized drivin mechanism, moreover,being arranged to Ea influenced for resynchronization purposes by means10- cated'conveniently to the operator of the said projector. he entirearrangement is such, moreover, that it will not interfere with theoperation of the projection machine in theusual and well-known manner,when'it' is desired to operate same independently of other apparatus.

In the accompanying drawings which illustrate the invention- Fig. 1 is aperspective view of the improved projcctor unit and of a talking machinewhich may be operated synchronously therewith.

Fig. 2 is a detail elevation of the motion picture projector head andmechanism conmeeting the synchronized motor mechanism thereto.

Similar characters of reference designate corresponding parts throughoutthe several views.

Referring to the drawings, 10 designates a motion picture apparatus ofstandard and well-known construction and which mag be carried by asuitable supporting stan or the like 11. The apparatus includes a driv-Serial No. 434,240.

ing shaft 12 and transmission mechanism 13, whereby the rotation of thefilm ad vancing and shutter operating mechanism is effected, all ofwhich is well understood and form no particular part of the presentinvention.

'The said driving shaft 12 is designed to be rotated by means fornon-synchronized driving of same, for example, it may receive a handle14 for manual operation of the mechanism; or, the said shaft may beoperated from an electric motor 15 carried by the stand 11 as through abelt 16 fitting a pulley 17 of the transmission mechanism.

When it is desired to operate the mechanism synchronously with otherapparatus, the motor drive aforesaid may be readily disenga ed as byremovinw the belt 16 from the pu ley 17. A sync ronizcd driving memberas the motor mechanism 20, arrangedfor example as set forth in my 00'pending application Serial No. 313,263, is mounted on a suitable base 21situated if desired within the'stand 11, and is desi ned to rotate avertically disposed drive suit 22 synchronously with the rotation ofother entertainment mechanism, as the talking machine apparatus 23. Thedrive shaft 22 is of a flexible nature to allow for conveniently'adapting sam'e to and 'alining it with the projecting machine drivemechanism. I

' To this'end, universal joints 24', as well as a sliding connection 25intermediate same, are provided in the. shaft; and its u lplper endterminates in a bevel pinion 26.

e shaft may be conveniently mounted at its upper end in a bearing 27 ofa bracket member 28 secured to and carried by, for example, thestereopticon rod 29 of the pro jector. On the driving shaft 12 of theproector is mounted a bevel gear wheel 30 arran ed to slide along saidshaft and to be held thereto, as by a spring catch 30, in position tomesh with the bevel pinion 26,

ig. 2, and thereby to transmit the rotation of the shaft 22 and effectthe advance of the film and operation of the shutter mech' anism of theprojector, similarl to the operation by the non-synchronized motorapparatus 15, or hand crank 14. \Vhen it is desired to operate theprojecting machine synchronously with other apparatus, the belt 16 andhandle 14 are detached and the gear wheels 26 and 30 brought into mesh,as aforesaid.

In addition, the rotation of the shaitji? is arranged to be varied forresynchronizing purposes through the operation of an assocnited deviceby rotating the stator member 3 l, of the motor mechanism 20, moreparwith a projecting machine, and the latter driven eithernon-synchronously or synchronously with some other apparatus, while theresynchronizing mechanism associated therewith affords a ready means fortaking care of any defects lm or unforeseen contingencies.

I aim 1. In s nchronized entertainment apparatus, incl uding a motionpicture machine, two driving means as ciated with said ma chine, one ofwhich is synchronized with a device of the entertainment apparatus,means to connect same with the motion picnection with and disengage samefrom said motion picture machine.

2. In s nchronized entertainment apparatus, incihding a motion picturemachine: two driving means associated with said ma chine, one of whichis synchronized with a device of the entertainment apparatus, a bearingbracket secured to the motion p ture machine, a vertically disposeddrive shaft mounted for rotation therein and driven from thesynchronized driving means, said shaft terminating at the motion picturemachine end in a bevel pinion, and a slidable bevel gear wheel connectedwith the motion picture machine transmission mechanism and adapted tomesh with said pinion.

n synchronized entertainment apparatus, including a motion picturemachine: two d chine, one of which is synchronized with a device of theentertainment apparatus, a bearing bracket member mounted on the toconnect sameiwith the motion,- china and including a drive aha.

'h a universal joint and with a slidinv connection, and means said shaftwith and disengage same from the said. motion picture machine.

S1 ed at New York, in the county of ew ark-and State of New. York, this28th day of December, A. 111920.,

WILLIAM H BRISTOL.

. provided

